CVE-2026-20218mediumCWE-121

CVE-2026-20218: fallo de gravedad media en Cisco Open Source Snort3

Cisco Secure Firewall Threat Defense Snort 3 Visual Basic for Applications Buffer Overflow Denial of Service Vulnerability

Publicada el · Actualizada el

Seguir esta CVE+ Monitorear Cisco Secure Firewall Threat Defense+ Monitorear Cisco UTD SNORT IPS Engine

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13Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 5.8epss 0.6%
A vulnerability in the Snort 3 Visual Basic for Applications (VBA) Decompression Engine of multiple Cisco products could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart unexpectedly, resulting in a denial of service (DoS) condition.   This vulnerability is due to improper range checking when Snort 3 decompresses VBA data, which is user controlled. An attacker could exploit this vulnerability by sending crafted VBA data to the Snort 3 Detection Engine of a targeted device. A successful exploit could allow the attacker to cause an overflow of stack data, which could result in a DoS condition.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
Productos afectados
Cisco · Cisco Open Source Snort3Cisco · Cisco Secure Firewall Threat Defense (FTD) SoftwareCisco · Cisco UTD SNORT IPS Engine Software
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